Atoms, Elements, Compounds
A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.
Atoms, Elements, Molecules, Compounds
• All matter is made of particles called atoms.
• An element has only one type of atom.
• Each element has its own name and symbol.
• Atoms can join together to form molecules.
• Elements can combine in a chemical reaction and form a compound.
First 20 elements in the Periodic Table
Names and Symbols
Hydrogen - H
Helium - He
Lithium - Li
Beryllium - Be
Boron - B
Carbon - C
Nitrogen - N
Oxygen - O
Fluorine - F
Neon - Ne
Sodium - Na
Magnesium - Mg
Aluminum (or Aluminium) - Al
Silicon - Si
Phosphorus - P
Sulfur - S
Chlorine - Cl
Argon - Ar
Potassium - K
Calcium - Ca
A song to help you remember the first 20 elements
Try out our new and fun Fraction Concoction Game.
Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.
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